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几何图像和坐标计算,是理解同一个线性操作的两种方式

前两讲从学习方法切入,Strang 的列组合是一个实例;不同表示各有适用场景。

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对照原文

the ability to translate back and forth between them
Vectors | Chapter 1, Essence of linear algebra · ▶ 8:45–8:49
the geometric understanding is what lets you judge what tools to use
Essence of linear algebra preview · ▶ 1:08–1:24
A times x is a combination of the columns of A.
Lec 1 | MIT 18.06 Linear Algebra, Spring 2005 · ▶ 38:24–38:36